.contro-fly-bottom {
  position: fixed;
  bottom: 50px;
  left: calc(50% - 80px);
  z-index: 3;
  display: flex;
  width: 160px;
  justify-content: space-around;
  .btn {
    cursor: pointer;
    img {
      height: 40px;
      width: 40px;
    }
  }
}
